Star stone

Star stone

Asteria, or star stone (from Gr. do-rip, "star"), is a name applied to such ornamental stones as exhibit when cut "en cabochon" a luminous star. The typical asteria is the star-sapphire, generally a bluish-grey corundum, milky or opalescent, star of six rays. In red corundum the stellate reflexion is less common, and hence the star-ruby occasionally found with the star-sapphire in Ceylon is among the most valued of "fancy stones." When the radiation is shown by yellow corundum, the stone is called star-topaz. Cymophane, or chatoyant chrysoberyl, may also be asteriated. In all these cases the asterism is due to the reflexion of light from twin-lamellae or from fine tubular cavities or thin enclosures definitely arranged in the stone. The astrion of Pliny is believed to have been our moonstone, since it is described as a colourless stone from India having within it the appearance of a star shining with the light of the moon. All star-stones were formerly regarded with much superstition.

References

*1911


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Star-stone — may mean:* Star stone, a precious stone in geology * Star stone (Cthulhu mythos), a fictional ward in the Cthulhu mythos …   Wikipedia

  • star stone — /ˈsta stoʊn/ (say stah stohn) noun any precious stone exhibiting asterism …  

  • star-stone — …   Useful english dictionary

  • Star Sapphire (comics) — Star Sapphire …   Wikipedia

  • Stone Cold Steve Austin — Born Steven James Anderson December 18, 1964 (1964 12 18) (age 46) Victoria, Texas, U.S …   Wikipedia

  • Stone Ocean — (ストーンオーシャン, Sutōn Ōshan?), initially referred to as Dai 6 Bu Kūjō Jolyne: Stone Ocean (第6部 空条徐倫 ―石作りの海―, Dai Roku Bu Kūjō Jorīn Sutōn Ōshan …   Wikipedia

  • Star Ocean: The Second Story — Developer(s) tri Ace TOSE (PSP)[ …   Wikipedia

  • Star Wars: Episode IV - A New Hope — Saltar a navegación, búsqueda Star Wars: Episode IV A New Hope Título En Hispanoamérica y España durante su estreno: La guerra de …   Wikipedia Español

  • Stone Trek — is an internet based Flash animated cartoon series that presents episodes of Star Trek as it might have appeared in the universe of The Flintstones , complete with 1960s style laugh tracks and Hanna Barbera cartoon sound effects. Overview The… …   Wikipedia

  • Stone Court — is the name of the Berkshire mansion lived in by UK pop group Five Star between February 1987 and sometime in 1990.Located in Sunningdale, Stone Court became the main focus of the UK media when Britain s then most famous pop group moved there… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”